Sentinel Federal Credit Union Membership

  • Sentinel Federal Credit Union is headquartered in Ellsworth Air Force Base, South Dakota and has been serving members since 1955.
  • 9th largest credit union in the state of South Dakota, managing $165.22 Million in assets and serving over 9,000 members.

Membership: You are eligible if you live, work, worship, or go to school in certain South Dakota counties in and around Rapid City.

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How to Join Sentinel Federal Credit Union

Sentinel Federal Credit Union membership eligibility includes, but is not limited to, the following:

  • If you live, work, worship, or attend school in, or are a business or other legal entity in the following South Dakota counties: Pennington, Lawrence, Meade, Custer, Lyman, Todd, Tripp, Gregory, and Mellette.

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